LA73

thick film linear positive tempco thermistor

Thermal

Dissipation

Constant

(mW/°C)

Rated

Ambient

Temp.

Max.

Working

Voltage (V)

applications and ratings

Part

Designation

Resistance

Tolerance

T.C.R.

Tolerance

T.C.R.

(ppm/°C)

Max.

1KΩ - 10KΩ

680Ω - 6.8KΩ

470Ω - 4.7KΩ

470Ω - 3.9KΩ

330Ω - 2.7KΩ

330Ω - 2.7KΩ

220Ω - 1.8KΩ

220Ω - 1.2KΩ

100Ω - 1.2KΩ

100Ω - 390Ω

68Ω - 220Ω

33Ω - 120Ω

22Ω - 82Ω

1KΩ - 10KΩ

680Ω - 6.8KΩ

470Ω - 4.7KΩ

470Ω - 3.9KΩ

330Ω - 2.7KΩ

330Ω - 2.7KΩ

220Ω - 1.8KΩ

220Ω - 1.2KΩ

100Ω - 1.2KΩ

100Ω - 390Ω

68Ω - 220Ω

33Ω - 120Ω

22Ω - 82Ω

1KΩ - 10KΩ

680Ω - 6.8KΩ

470Ω - 4.7KΩ

470Ω - 3.9KΩ

330Ω - 2.7KΩ

330Ω - 2.7KΩ

220Ω - 1.8KΩ

220Ω - 1.2KΩ

100Ω - 1.2KΩ

100Ω - 390Ω

68Ω - 220Ω

33Ω - 120Ω

22Ω - 82Ω

Resistance Range

E-12

LA731J

LA732A

LA732B

J: ±5%

±200ppm/°C

±10%

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3300

3600

7.6

LA731J

8.2

LA732A

9.0

25

50

50

+70°C

LA732B

Performance Characteristics

Derating Curve

Temperature Characteristics

environmental applications

100

80

60

40

20

-60

-40

-20

0

406080100140

70

20

Ambient Temperature

(°C)

0

-55

120

125

40

30

0

-10

-50

-25

0

5075100125

Ambient Temperature

(°C)

-40

-75

3600ppm/°C

20

10

-20

-30

3000ppm/°C

2000ppm/°C

1000ppm/°C

25

Approximate Expression for Resistance-Temperature Characteristics

3000

3300

3600

0.926

0.00294

0.918

0.910

T.C.R.

0.00325

0.00359

(Values are not guaranteed but typical)

T: Ambient temperature (°C)

Operating Temp. Range: -55°C - +125°C

185

KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

12/16/11

Parameter

Requirement ∆ R ±(% + 0.1Ω)

Limit

Typical

Test Method

Resistance

T.C.R.

25°C

+25°C/+75°C

Within specified

tolerance

Within specified

T.C.R.

—

—

Overload (Short time)

Rated voltage x 2.5 or maximum working volume x 2 for 5 seconds, whichever is lower

±1.0%

±0.5%

Resistance to Solder Heat

260°C ± 5°C, 10 seconds ± 1 second

±1.0%

±0.5%

Rapid Change of Temperature

-55°C (30 minutes)/ +125°C (30 minutes), 100 cycles

±1.0%

±0.5%

Moisture Resistance

40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±3.0%

±1.5%

Endurance at 70°C

70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±3.0%

±1.5%

Confirming resistance drift is recommended since this product has a tendency to have bigger resistance change than general flat chip over 70°C.

Please pay attention not to be applied ESD, it may cause of resistance change.

Test Items

High Temperature Exposure

125°C, 1000 hours

±3.0%

Reference

Test Method

ESD

Human model, 100 pF 1.5 kΩ

300V

Actual Value (Out of Guarantee)